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Finding the Fourth Proportional to 245,465.20, 368,413.80 and 145,500.40

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Solution

The fourth proportional to 245,465.20, 368,413.80 and 145,500.40 is: 218,378.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,465.20 : 368,413.80 = 145,500.40 : x
  2. Step 2: Convert to fraction form
    245,465.20/368,413.80 = 145,500.40/x
  3. Step 3: Cross multiply
    245,465.20x = 368,413.80 × 145,500.40
  4. Step 4: Simplify right side
    245,465.20x = 53,604,355,265.52
  5. Step 5: Solve for x
    x = 53,604,355,265.52/245,465.20
  6. Step 6: Final answer
    x = 218,378.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.